JP2832555B2 - Electromagnetic fuel injection valve - Google Patents
Electromagnetic fuel injection valveInfo
- Publication number
- JP2832555B2 JP2832555B2 JP7198690A JP7198690A JP2832555B2 JP 2832555 B2 JP2832555 B2 JP 2832555B2 JP 7198690 A JP7198690 A JP 7198690A JP 7198690 A JP7198690 A JP 7198690A JP 2832555 B2 JP2832555 B2 JP 2832555B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- conical
- fuel
- swirl
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Fuel-Injection Apparatus (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電磁式燃料噴射弁とりわけ外開き弁体を持つ
タイプの電磁式燃料噴射弁に関する。Description: TECHNICAL FIELD The present invention relates to an electromagnetic fuel injection valve, and more particularly to an electromagnetic fuel injection valve of a type having an outwardly opening valve body.
ガソリンエンジン等における燃料噴射は、通常の場
合、比較的低い圧力で送られた燃料を、弁内の最大通過
面積と流通時間をパラメータとして制御しており、その
ための手段として、特開平１−208563号公報等に電磁式
燃料噴射弁が提案されている。In general, fuel injection in a gasoline engine or the like is performed by controlling fuel sent at a relatively low pressure using the maximum passage area in the valve and the circulation time as parameters. Japanese Patent Application Laid-Open Publication No. HEI 9-205 and the like have proposed an electromagnetic fuel injection valve.
この先行技術においては、弁体として球体が使用さ
れ、これを弁本体の開孔より上流側に内設したシートと
着座させる一方、開孔内にオリフィスを持ったカップ状
部材を固定し、球状の弁体の電磁機構によりリフトさせ
ることで燃料を通過させ、オリフイスで流量を絞って、
開孔から分配噴射させるようにしていた。しかし、この
構造では、噴霧の貫徹力が強くなるため吸気管への噴射
には使用できるが、燃焼室に直接燃料を噴射させる方式
には不向きであるという問題があった。In this prior art, a spherical body is used as a valve body, which is seated on a seat provided upstream of an opening of a valve body, while a cup-shaped member having an orifice is fixed in the opening, and a spherical body is used. The fuel is passed by lifted by the electromagnetic mechanism of the valve body, and the flow rate is reduced by the orifice,
Distributing injection was performed from the opening. However, this structure has a problem that it is not suitable for a system in which fuel is directly injected into a combustion chamber, although it can be used for injection into an intake pipe because the penetration force of spray becomes strong.
燃焼室内に直接燃料を供給するには、弁体が傘状に広
がったポペット弁が適しており、かかる形式の燃料噴射
弁として、特開昭58−30468号公報等が提案されてい
る。For directly supplying fuel into the combustion chamber, a poppet valve having an umbrella-shaped valve body is suitable, and Japanese Patent Application Laid-Open No. Sho 58-30468 proposes a fuel injection valve of this type.
従来のポペット式燃料噴射弁は、ポペットのシート部
とバルブボデイのシート部との圧力バランス、すなわち
シート部に受圧面積の差があると漏れの原因になるとの
考えから、実際には、バルブボデイの内径がシート径と
なるようにバルブボデイのシート角度を弁体のシート角
度よりも大きく設定し、弁体の円錐状に広がる傘部の途
中でシートさせるようにしていた。The conventional poppet type fuel injection valve has a pressure balance between the seat portion of the poppet and the seat portion of the valve body, that is, a difference in pressure receiving area between the seat portions may cause leakage. The seat angle of the valve body is set to be larger than the seat angle of the valve body so that the seat diameter becomes the seat diameter, and the seat is made in the middle of the conical umbrella portion of the valve body.
しかしながら、この構造では、シート部よりも下流の
傘部周面とバルブボデイの間に環状隙間が形成され、こ
れが常時外部にさらされることになる。このため、燃焼
室等に取付け使用すると、前記環状隙間にカーボンが次
第に付着し、それにより、噴霧状態が悪化したり、噴霧
の流れが変化したりし、エンジン性能が悪化するおそれ
があった。However, in this structure, an annular gap is formed between the peripheral surface of the umbrella portion downstream of the seat portion and the valve body, and this is always exposed to the outside. For this reason, when mounted and used in a combustion chamber or the like, carbon gradually adheres to the annular gap, thereby deteriorating the spray state or changing the flow of the spray, and there is a risk that engine performance may deteriorate.
まず、燃焼室に直接燃料を供給する場合には、燃料噴
霧を微粒化しさらに貫徹力を減衰させて広く分散させる
ことが好ましい。それには噴射弁の弁体にスワール機構
を設けることが有効である。しかし、従来では、第３図
のように、スワール溝ａを上流に設け、その下流にシー
ト部ｂを設けていたため、スワール溝ａで旋回流を発生
させても、シート部の最狭部の絞りでスワール速度が減
衰してしまうという欠点があった。First, when the fuel is directly supplied to the combustion chamber, it is preferable to atomize the fuel spray and attenuate the penetrating force to widely disperse the fuel. For that purpose, it is effective to provide a swirl mechanism in the valve body of the injection valve. However, conventionally, as shown in FIG. 3, since the swirl groove a is provided upstream and the seat portion b is provided downstream thereof, even if the swirl flow is generated in the swirl groove a, the narrowest portion of the sheet portion is not formed. There is a disadvantage that the swirl speed is attenuated by the aperture.
そこで、特開昭62−228667号公報等において、第４図
のように、シート部ｂの下流にスワール溝ａを形成する
ことも提案されている。しかし、この構造ではスワール
溝ａが燃焼室に露出するため、前記したようにスワール
溝ａにカーボンが付着し、それによりスワール溝が埋め
られて旋回流が作られなくなつたり、流量が変化する恐
れがあり、実用適でなかった。Therefore, Japanese Patent Application Laid-Open No. 62-228667 and the like also propose to form a swirl groove a downstream of the seat portion b as shown in FIG. However, in this structure, since the swirl groove a is exposed to the combustion chamber, carbon adheres to the swirl groove a as described above, whereby the swirl groove is buried and a swirling flow is not created, or the flow rate changes. There was fear and it was not practical.
本発明は前記のような問題点を解消するために創案さ
れたもので、その目的とするところは、簡単な構造によ
り噴孔部へのカーボン付着を防止し噴霧形状や流量特性
をよくすることができ、ことにカーボン付着を生じさせ
ることなく適切な旋回流を創生させ、良好な燃料の微粒
化と分散性を実現することができる外開き弁タイプの電
磁式燃料噴射弁を提供することにある。The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to prevent the adhesion of carbon to an injection hole portion by a simple structure and improve a spray shape and a flow rate characteristic. The present invention provides an open-type valve-type electromagnetic fuel injection valve capable of creating an appropriate swirling flow without causing carbon deposition and achieving good atomization and dispersibility of fuel. It is in.
上記目的を達成するため本発明は、ポペット弁と電磁
弁とを備え、ポペット弁の円錐状弁部が電磁弁への通電
制御でシートから離間して燃料を噴射する形式のものに
おいて、円錐状弁部の先端がバルブボデイの内径先端エ
ッジでシートされ、円錐状弁部の外端面とバルブボデイ
外端面が面一となっている構成とし、かつ、円錐状弁部
の上流にスワール溝を設け、さらにスワール溝の上流に
調量部を設けたものである。In order to achieve the above object, the present invention provides a poppet valve including a poppet valve and an electromagnetic valve, wherein a conical valve portion of the poppet valve injects fuel away from a seat by controlling energization of the electromagnetic valve. The distal end of the valve portion is seated at the inner peripheral edge of the valve body, the outer end surface of the conical valve portion and the outer end surface of the valve body are flush, and a swirl groove is provided upstream of the conical valve portion, A metering section is provided upstream of the swirl groove.
以下本発明の実施例を添付図面に基いて説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
第１図と第２図は本発明による電磁式燃料噴射弁の一
実施例を示しており、第1a図は噴孔部を拡大して示して
いる。1 and 2 show an embodiment of an electromagnetic fuel injection valve according to the present invention, and FIG. 1a shows an enlarged view of an injection hole portion.
第１図において、１は２段の段付き孔を有する筒状の
ホルダ、２はホルダ１に内嵌されたポペット弁、３はポ
ペット弁２の背部に内嵌された電磁弁、４はホルダ１を
閉じるカバー、５はポペット弁２に対応するホルダ部位
に挿着された燃料供給プラグである。In FIG. 1, 1 is a cylindrical holder having two stepped holes, 2 is a poppet valve fitted inside the holder 1, 3 is an electromagnetic valve fitted inside the back of the poppet valve 2, and 4 is a holder. Reference numeral 5 denotes a fuel supply plug inserted into a holder portion corresponding to the poppet valve 2.
まず、ポペット弁２は、ホルダ１の先端孔1aに嵌合す
る筒部60とこれに続き第１段部に支持されるフランジ61
を有する第１ボデイ部体６と、フランジ61に下端が密接
する有底筒状の第２ボデイ部体７と、前記第２ボデイ部
体７から第１ボデイ部体６にかけて内挿されたポペット
弁体８と、ポペット弁体８に外嵌するばね受け９と、こ
れの背部を支持するストッパ10と、ばね受け９と第１ボ
デイ部体６のフランジ61の間に配されたスプリング11
と、ポペット弁体８の頂軸8fに外嵌するブッシュ12とを
備えている。First, the poppet valve 2 has a cylindrical portion 60 fitted into the distal end hole 1a of the holder 1 and a flange 61 supported by the first step portion.
, A bottomed cylindrical second body part 7 whose lower end is in close contact with the flange 61, and a poppet inserted from the second body part 7 to the first body part 6. The valve body 8, a spring receiver 9 fitted to the outside of the poppet valve body 8, a stopper 10 for supporting the back thereof, and a spring 11 arranged between the spring receiver 9 and the flange 61 of the first body part 6.
And a bush 12 that fits externally on the top shaft 8f of the poppet valve element 8.
詳しく述べると、第２ボデイ部体７は、ボデイの径小
側内壁1bとの間に環状室Ａを形成するようにヘッド部以
下の領域の外周を径小にし、燃料供給プラグ５に到る供
給孔451の軸線上に複数個の流入孔70を形成している。More specifically, the outer periphery of the area below the head portion of the second body part 7 is reduced so that an annular chamber A is formed between the second body part 7 and the inner wall 1b on the small diameter side of the body. A plurality of inflow holes 70 are formed on the axis of the supply hole 451.
ポペット弁体８は、第２図の示すように、下向きに径
の拡大した円錐状の弁部8aと、該弁部8aの最大径より小
さく第１バルブ部体６の筒部内面との間に程度の燃料通
過隙間を有するスワール部8bと、このスワール部8bの上
位（上流側）にあって第１ボデイ部体６の筒部内面との
間に微小な燃料通過隙間Ｂを形成する調量部8cと、該調
量部8cの上位に形成された径小軸部８と、これに続き前
記ばね受け９に摺動可能に嵌まるガイド部8eと、ガイド
部8eの端からストッパ10を貫いて伸びる頂軸8fを、下端
から上端にかけて順次設けている。As shown in FIG. 2, the poppet valve element 8 is provided between a conical valve part 8a whose diameter is enlarged downward and an inner surface of the cylindrical part of the first valve part body 6 which is smaller than the maximum diameter of the valve part 8a. A small fuel passage gap B is formed between the swirl portion 8b having a small fuel passage gap and an upper portion (upstream side) of the swirl portion 8b and an inner surface of the cylindrical portion of the first body portion 6. Measuring portion 8c, a small-diameter shaft portion 8 formed above the adjusting portion 8c, a guide portion 8e which is slidably fitted in the spring receiver 9 and a stopper 10 from the end of the guide portion 8e. A top shaft 8f extending from the bottom is sequentially provided from the lower end to the upper end.
第１ボデイ部体６の筒部先端には、第1a図に示すよう
に噴射孔Ｃが作られるが、この噴射孔Ｃに位置する円錐
状弁部8aは所定のシート角αを有している。これに対
し、噴射孔Ｃを構成するポペット弁の筒部60のシート角
βは、円錐状弁部8aのシート角αよりも小さくなってお
り、しかも、筒部60の外端面600と弁部8aの外端面80と
は面一となるようにカットされ、それにより円錐状弁部
8aの円錐先端径D1が筒部外端面600と円錐内壁601とのエ
ッジ径と合致し、そのエッジと、円錐面と外端面80との
境界をなすエッジとでシート部81を構成している。An injection hole C is formed at the tip of the cylindrical portion of the first body part 6 as shown in FIG. 1a, and the conical valve portion 8a located at the injection hole C has a predetermined seat angle α. I have. On the other hand, the seat angle β of the cylindrical portion 60 of the poppet valve constituting the injection hole C is smaller than the seat angle α of the conical valve portion 8a, and the outer end surface 600 of the cylindrical portion 60 and the valve portion 8a is cut so as to be flush with the outer end face 80, thereby forming a conical valve section.
Conical tip diameter D 1 of the 8a is consistent with an edge diameter of the cylindrical outer end surface 600 and a conical inner wall 601, constitutes its edge, a seat portion 81 with an edge forming a boundary between the conical surface and the outer end surface 80 I have.
スワール部8bは外周にらせん状あるいは傾斜状の溝82
を有している。調量部8cは前記円錐状弁部8aがリフトし
たときの燃料通過面積より狭い最狭な燃料通過隙間Ｂを
得るべく短柱状となっている。すなわち、本発明におい
ては、シート部81は最狭部とはなっていない。The swirl portion 8b has a spiral or inclined groove 82
have. The metering section 8c has a short columnar shape so as to obtain the narrowest fuel passage gap B which is smaller than the fuel passage area when the conical valve section 8a is lifted. That is, in the present invention, the seat portion 81 is not the narrowest portion.
前記ブッシュ12は、頂軸8fに緊密に外嵌する筒部120
とその上部の中実部121とを有し、第２バルブボデイ７
の底壁孔に設けたシール材13を介して電磁部３のヨーク
3aに摺動自在に嵌まっており、第２図のように、ブッシ
ュ12の外径D2は前記円錐状弁部8aのシート径（円錐先端
径D1）と同じ径を有している。これは、シート径が大き
くなったことによる受圧面積の増大で圧力バランスの崩
れを防止するためである。The bush 12 has a cylindrical portion 120 tightly fitted to the top shaft 8f.
And a solid portion 121 above the second valve body 7.
Yoke of the electromagnetic unit 3 via the sealing material 13 provided in the bottom wall hole of
3a and waiting slidably, as in Figure 2, the outer diameter D 2 of the bush 12 has the same diameter as the seat diameter of the conical valve portion 8a (cone tip diameter D 1) . This is to prevent the pressure balance from being lost due to an increase in the pressure receiving area due to an increase in the sheet diameter.
電磁弁３は公知のものと同様であり、ホルダ１の径大
孔にねじ込まれたヨーク3aと、これに内嵌されたソレノ
イド3bと、ソレノイドの内側に配されたアーマチュア3c
と、これを付勢するばね3dとを有し、アーマチュア3cは
前記ブッシュ12に対向するプッシュロッド30を有してい
る。The solenoid valve 3 is the same as a known one, and includes a yoke 3a screwed into a large-diameter hole of the holder 1, a solenoid 3b fitted therein, and an armature 3c disposed inside the solenoid.
And a spring 3d for urging the armature 3c. The armature 3c has a push rod 30 facing the bush 12.
第１図において、燃料は図示しない供給手段から所定
の比較的低い圧力で燃料供給プラグ５に送られ、供給孔
51、環状室Ａおよび流入孔70を経てポペット弁２内に流
入する。In FIG. 1, fuel is supplied from a supply means (not shown) to a fuel supply plug 5 at a predetermined relatively low pressure.
51, it flows into the poppet valve 2 through the annular chamber A and the inflow hole 70.
この状態で電磁弁３のソレノイド3bに電圧を印加する
と、ソレノイド3bの電磁力でアーマチュア3cが下降し、
それによりブッシュ12が押し下げられ、これに嵌合して
いるポペット弁体８ともどもストッパ10をスプリング11
のバネ力に抗して押し下げる。これにより円錐状弁部8a
はシート部81からリフトし、噴射孔Ｃから燃料が噴射さ
れる。ソレノイド3bへの電圧の印加を止めれば、スプリ
ング11の作用によりポペット弁体８およびブッシュ12は
戻され、円錐状弁部8aはシート部81に着座するするため
燃料の噴射が停止する。したがってソレノイド3bへの電
圧（電流）をデューティ制御することで燃料の噴射量を
制御することができる。When a voltage is applied to the solenoid 3b of the solenoid valve 3 in this state, the armature 3c is lowered by the electromagnetic force of the solenoid 3b,
As a result, the bush 12 is pushed down, and the poppet valve element 8 fitted thereto and the stopper 10 are also released by the spring 11.
Press down against the spring force of. As a result, the conical valve portion 8a
Is lifted from the seat portion 81, and fuel is injected from the injection holes C. When the application of the voltage to the solenoid 3b is stopped, the poppet valve body 8 and the bush 12 are returned by the action of the spring 11, and the conical valve portion 8a is seated on the seat portion 81, so that the fuel injection is stopped. Therefore, the duty of the voltage (current) to the solenoid 3b can control the fuel injection amount.
上記開弁時において、本発明では、燃料はまず調量部
8cを通り、次いでスワール部8bを通り、それから弁部円
錐面とボデイ側円錐内壁601の間のリング状隙間を通っ
て燃焼室に噴霧される。調量部8cは筒部60の内壁との間
の最狭な燃料通過隙間Ｂであるから、燃料はここで絞ら
れた所定の流量が流下する。そして、その調量された流
量分がスワール部8bの溝82を通ることにより旋回流が与
えられる。その旋回流は調量部の下流で創生され、調量
部の上流でつくられるものではないから流速が弱められ
ることがなく、弁部円錐面とボデイ側円錐内壁601の間
のテーパリング状隙間で決定される噴孔面積で旋回状に
噴霧され、次いで、遠心力により広がり、細かく分散さ
れる。このため、微粒化が良く、貫徹力も減少して良好
な分散性が得られる。At the time of the valve opening, in the present invention, the fuel is first supplied to the metering section.
8c, then through the swirl portion 8b and then into the combustion chamber through a ring-shaped gap between the valve conical surface and the body side conical inner wall 601. Since the metering section 8c is the narrowest fuel passage gap B between the metering section 8c and the inner wall of the cylinder section 60, the fuel flows down at a predetermined flow rate narrowed down here. Then, a swirling flow is given by passing the adjusted flow rate through the groove 82 of the swirl portion 8b. The swirling flow is created downstream of the metering section and is not created upstream of the metering section, so that the flow velocity is not weakened, and the tapered shape between the valve conical surface and the body side conical inner wall 601 It is sprayed in a swirl shape with the injection hole area determined by the gap, and then spreads and is finely dispersed by centrifugal force. For this reason, fine atomization is good, penetration force is reduced, and good dispersibility is obtained.
さらに、本発明では、スワール部8bがシート部81より
も上流側にあるためスワールを作る溝82へのカーボン付
着が起らず、しかも、円錐状弁部8aの円錐面は噴射時以
外は外部に曝されず、シート部81は円錐状弁体8aの円錐
面の途中でなく先端（円錐面と外端面とのエッジ）にあ
り、噴射時以外はボデイ円錐面601との間に隙間が存在
しない、そのため、シート部81へのカーボン付着が起ら
ず、望まれ噴霧形状が安定的に維持され、流量の変化も
生じない。また、噴射時以外は円錐状弁部8aの外端面80
とボデイの外端面600とが面一であることから燃料室に
面する側の凹凸が少なく、熱応力も緩和することができ
る。Further, in the present invention, since the swirl portion 8b is located on the upstream side of the seat portion 81, carbon does not adhere to the groove 82 that forms the swirl, and the conical surface of the conical valve portion 8a has an external surface except during injection. The seat portion 81 is not at the middle of the conical surface of the conical valve body 8a but at the tip (edge between the conical surface and the outer end surface), and there is a gap between the conical valve body 8a and the body conical surface 601 except during injection. Therefore, carbon does not adhere to the sheet portion 81, the desired spray shape is stably maintained, and the flow rate does not change. Except during injection, the outer end face 80 of the conical valve portion 8a
And the outer end surface 600 of the body are flush with each other, so that there are few irregularities on the side facing the fuel chamber, and the thermal stress can be reduced.
以上説明した本発明によるときには、円錐状弁部の先
端がバルブボデイの内径先端エッジでシートされ、円錐
状弁部の外端面とバルブボデイ外端面が面一となってお
り、かつ、円錐状弁体の上流にスワール溝を設け、さら
にスワール溝の上流に燃料調量部を設けたので、簡単な
構造により噴孔部へのカーボン付着を防止し、しかも適
切な旋回流を創生させ、良好な燃料の微粒化と分散生を
実現することができるというすぐれた効果が得られる。According to the present invention described above, the tip of the conical valve portion is seated at the front end edge of the inner diameter of the valve body, the outer end surface of the conical valve portion and the outer end surface of the valve body are flush, and the conical valve body has A swirl groove is provided upstream and a fuel metering section is provided upstream of the swirl groove.Since the structure is simple, carbon is prevented from adhering to the injection hole, and an appropriate swirl flow is created, resulting in good fuel efficiency. An excellent effect is obtained in that it is possible to realize the atomization and the dispersion of the particles.
第１図は本発明による電磁式燃料噴射弁の一実施例を示
す断面図、第1a図は第１図における噴孔部分の模式的拡
大図、第２図は第１図の要部拡大図、第３図と第４図は
従来の燃料噴射弁の噴孔部分の拡大図である。 ２……ポペット弁、３……電磁弁、６……第１ボデイ部
体、８……ポペット弁体、8a……円錐状弁部、8b……ス
ワール部、8c……調量部、60……筒部、80……外端面、
81……シート部、600……外端面、Ｂ……最狭な燃料通
過隙間1 is a sectional view showing an embodiment of an electromagnetic fuel injection valve according to the present invention, FIG. 1a is a schematic enlarged view of an injection hole portion in FIG. 1, and FIG. 2 is an enlarged view of a main part of FIG. 3 and 4 are enlarged views of the injection hole portion of the conventional fuel injection valve. 2 ... poppet valve, 3 ... solenoid valve, 6 ... first body part, 8 ... poppet valve body, 8a ... conical valve part, 8b ... swirl part, 8c ... metering part, 60 …… Cylinder part, 80 …… Outer end face,
81 ... Seat part, 600 ... Outer end face, B ... Narrowest fuel passage gap
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−212763（ＪＰ，Ａ) 特開 平１−138366（ＪＰ，Ａ) 特開 平３−70865（ＪＰ，Ａ) 特開 昭62−255570（ＪＰ，Ａ) 実開 平１−174568（ＪＰ，Ｕ) 実開 平１−174566（ＪＰ，Ｕ) 実開 平１−69180（ＪＰ，Ｕ) 実開 平３−45468（ＪＰ，Ｕ) 実開 昭59−43668（ＪＰ，Ｕ) 実開 平１−131867（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) F02M 51/06 F02M 61/08 F02M 61/18──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-212763 (JP, A) JP-A-1-138366 (JP, A) JP-A-3-70865 (JP, A) JP-A-62-1987 255570 (JP, A) Japanese Utility Model 1-174568 (JP, U) Japanese Utility Model 1-174566 (JP, U) Japanese Utility Model 1-69180 (JP, U) Japanese Utility Model 3-45468 (JP, U) Fukuoka Sho 59-43668 (JP, U) Fukakai Hei 1-131867 (JP, U) (58) Fields investigated (Int. Cl. 6 , DB name) F02M 51/06 F02M 61/08 F02M 61/18
Claims (1)
の円錐状弁部が電磁弁への通電制御でシートから離間し
て燃料を噴射する形式のものにおいて、円錐状弁部の先
端がバルブボデイの内径先端エッジでシートされ、円錐
状弁部の外端面とバルブボデイ外端面が面一となってお
り、かつ、円錐状弁部の上流にスワール溝を設け、さら
にスワール溝の上流に燃料調量部を設けたことを特徴と
する電磁式燃料噴射弁。An apparatus comprising a poppet valve and an electromagnetic valve, wherein the conical valve portion of the poppet valve injects fuel away from a seat by controlling the energization of the electromagnetic valve. It is seated at the leading edge of the inner diameter of the valve body, the outer end face of the conical valve part and the outer end face of the valve body are flush, and a swirl groove is provided upstream of the conical valve part, and the fuel control is provided upstream of the swirl groove. An electromagnetic fuel injection valve characterized by having an amount section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7198690A JP2832555B2 (en) | 1990-03-23 | 1990-03-23 | Electromagnetic fuel injection valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7198690A JP2832555B2 (en) | 1990-03-23 | 1990-03-23 | Electromagnetic fuel injection valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03275973A JPH03275973A (en) | 1991-12-06 |
| JP2832555B2 true JP2832555B2 (en) | 1998-12-09 |
Family
ID=13476298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7198690A Expired - Lifetime JP2832555B2 (en) | 1990-03-23 | 1990-03-23 | Electromagnetic fuel injection valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2832555B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798978A (en) * | 2010-03-24 | 2010-08-11 | 朱小平 | Electronic control split-type fuel injector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060027261A1 (en) * | 2004-08-04 | 2006-02-09 | Plevich Chuck W | Method for repair of regulator poppet and seat |
| JP5830891B2 (en) * | 2011-03-25 | 2015-12-09 | トヨタ自動車株式会社 | Fuel injection valve |
-
1990
- 1990-03-23 JP JP7198690A patent/JP2832555B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101798978A (en) * | 2010-03-24 | 2010-08-11 | 朱小平 | Electronic control split-type fuel injector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03275973A (en) | 1991-12-06 |
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